Editorial Technical Reference

CNC Machined Part

This page explains how CNC Machined Part is classified within Fabricated Metal Product Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

CNC machined parts are precision metal components manufactured via computer numerical control milling, turning, or drilling, used in assemblies requiring tight tolerances and complex geometries.

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Product Specifications

Technical details and manufacturing context for CNC Machined Part

Definition

CNC machined parts are widely used across industries such as automotive, aerospace, medical devices, and industrial machinery, serving as structural brackets, housings, shafts, and custom fittings. They are specified by engineering drawings that define dimensions, tolerances, surface finish, and material grade. Grades are distinguished by material selection (e.g., aluminum 6061-T6 vs. stainless steel 316L), tolerance classes (e.g., ISO 2768-m vs. ISO 2768-f), and surface treatments (e.g., anodizing, passivation). The manufacturing process ensures high repeatability and accuracy, making them ideal for both prototyping and mass production.

Working Principle

CNC machining removes material from a solid block (workpiece) using rotating cutting tools controlled by a computer program. The machine follows precise tool paths to achieve the desired shape, dimensions, and surface finish. The physical behavior involves cutting forces, heat generation, and chip formation, which are managed by selecting appropriate cutting parameters and coolants to maintain accuracy and tool life.

Common Materials

Aluminum 6061-T6, Stainless Steel 304/316L, Brass C36000, Titanium Grade 5 (Ti-6Al-4V), Carbon Steel 1018/1045, Plastics (e.g., POM, PTFE)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Dimensional Tolerance	±0.05 mm	General tolerance for standard machining; tighter tolerances available on request.ISO 2768-m
Surface Roughness	Ra 0.8–3.2 μm	Typical range for machined surfaces; finer finishes achievable with additional processes.ISO 1302
Part Size Range	10–500 mm	Maximum part dimensions depend on machine capacity; larger parts possible with special equipment.
Material Hardness	HRC 20–60 HRC	Range for common machined metals; hardness affects machinability and tool wear.ASTM E18
Yield Strength	250–1100 MPa	Depends on material grade; e.g., 6061-T6 ~276 MPa, 316L ~290 MPa, Ti-6Al-4V ~880 MPa.ASTM E8
Operating Temperature Range	-40 to 300 °C	Typical for aluminum and stainless steel; plastics have lower limits.
Thread Size	M2–M20 mm	Common metric thread sizes; inch threads also available.ISO 68-1
Flatness	0.05 mm	Typical flatness tolerance for machined surfaces.ISO 1101
Perpendicularity	0.05 mm	Typical perpendicularity tolerance for machined features.ISO 1101
Surface Treatment	Anodizing, Passivation, Powder Coating	Common finishes to enhance corrosion resistance or appearance.MIL-A-8625, ASTM A967
Inspection Method	CMM, Calipers, Micrometers	Quality control ensures dimensional accuracy.ISO 14253-1

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for CNC Machined Part.

Published Manufacturer Relationships

Source-reviewed profile relationships currently associated with CNC Machined Part

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Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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